David Haye has laid down the gauntlet to Vitali Klitschko, confirming he would postpone his retirement plans to fight the Ukrainian.

Haye has long maintained his desire to quit boxing when he turns 31 in October. However, that would mean going out on a losing note after his defeat to Wladimir Klitschko in July.

The option of fighting Vitali, Wladimir's brother, has always been on the cards, particularly after Vitali became visibly irritated by Haye in the build-up to the Brit's fight with Wladimir.

Vitali's latest outing saw him beat Tomasz Adamek, stopping him in the 10th round despite a less-than-impressive performance. After the contest, Klitschko made it clear he wanted to fight Haye.

The Brit has now clarified he will step up to the challenge, for a bout that could well take place at Wembley Stadium. Talking to media in Germany, the Klitschkos' adopted home, Haye promised to destroy the 40-year-old.

"It doesn't matter to me where I fight you, I'll fight you on the moon. He has my contact details, I'm waiting for him. No fight at heavyweight would generate more publicity than Haye against the old Klitschko.

"I am the most popular heavyweight on the planet and with me he will earn the most money."